Cylinder grinder



Dec. 15, 1936.

M. C. HUTTO CYLINDER GRINDER Filed March 4, 1926 4 Sheets-Sheet l A TT ORNE Y.

4 Sheets-Sheet 5 aiiv I h| l 1 M m I U m %m U w U 4Q U y a m M 4 d a IT?! NW 3 WM M 7 4 5 r 6 4 4 4 W Q 1 X Z iii: a

Dec. 15, 1936'.

Dec. 15, 1936. c HUTTO CYLINDER GRINDER 4 Sheets-Sheet 4 Filed March 4, 1926 R O T. N I P N I flarjden ATTORNEY.

Patented Dec. 1936 UNITED. STATES PATENT OFFICE CYLINDER GRINDER Pennsylvania 7 Application March 4, 1926, Serial No. 92,118

25 Claims.

This invention relates to cylinder grinders and the object of the invention is to provide a cylinder grinder having a series of grinding stones which are expandible radially from a 'minimum diameter to a maximum diameter.

Another object of the invention is to provide a cylinder grinder in which the means for expanding the grinding stones is manually operable, the grinder being limited so that the stones cannot be expanded beyond the maximum set diameter.

Another object of the invention is to provide a grinder of the character described'in which the diameter to which the grinding stones may be expanded may be set at different points and when so'set the stones cannot be radially expanded beyond the set diameter.

Another object of the invention is to provide a series of cylinder grinders of the character described which may be mounted to grind out a plurality of cylinders of an entire cylinder block of an engine at one time.

These objects and the several novel features of the .invention are hereinafter more fully described and claimed and the preferred form of construction by which these objects are attained is shown in the accompanying drawings in which Fig. 1 is a plan view of a series of cylinder grinders arranged for grinding a complete cylinder block. 1

Fig. 2 is a longitudinal section through the grinder and a portion of the operating mechamsm.

Fig. 3 is a section through the operating mechanism.

Fig. 4 is an elevation of a part of the diameter adjusting mechanism.

Fig. 5 is an elevation taken from the right end of Fig. 1.

Fig. 6 is a perspective view of the diameter stop collar.

Fig.- 7 is a perspective view of the stop member to be secured to the stop collar.

Fig. 8 is a view of the adjustable stop member.

Fig. 9 is an elevation of the adjustable stop member taken from the right of Fig. 8.

Fig. 10 is a section taken on line Ill-40 of Fig. 3.

The grinder comprises a body member I shown in Fig.2 having a central bore 2 therethrough.

- A pair of cones 3 and 4 are slidable longitudinally of this bore and are connected together by-the shaft or screw 5 which is threaded into the cone 3 and extends through the cone 4 and is provided with a collar 6 which engages the outer end of the cone 4 and prevents the cones from spreading apart on the shaft 5. The end of the body I is provided with two bayonet slots I and 8 in which the ends 9 of the shaft member I 0 are adapted to engage and a retaining member II is secured over the end of the body I to prevent removal of the member Ill. The member I Ilprovides a driving connection between the body I and the driving head I2. As shown in Fig. 8 the upper end of the member I 0 is provided with two extending pins I3 adapted to be positioned in the bayonet slots I4 in the end of the head I2. Each bayonet slot I4 is provided with an entry I5 and after the pins I3 have been positioned in the portions I4 of the slots a latch member I6 is turned on its axis to engage in the straight portion I5 of the respective bayonet slot to prevent the pin I3 from being removed from the head I2 as will be understood from Figs. 2 and 3. This shaft member IIl provides a semi-flexible or universal driving connection between the head I2 and the body I. The latch member I6 is pivotally mounted in a slot H in a stop collar ormember I8, shown in Fig. 6 which is provided with a keyway I9 containing a key I9I by which the member I8 is secured to the head I2. This member I8 is provided with a slot.

in which a stop member 2| shown in Fig. 7 is adapted to fit and this member 2| is'provided with an end 22 which is slightly undercut as shown. The member 2| is positioned'in the slot 20 and is secured in place by the screw 23 shown in Fig. 3. A supporting sleeve 24 is rotatably mounted on the head I2 by the ball bearings 25 and rotatably supported in the lower end of the sleeve 24 is a ring gear 26 shown in Figs.'2 and 3. The ring gear 26 meshes with an idler gear 21 which is journaled in the slot 28 in the, head 52 and the gear 21 in turn meshes with. the gear 29 having a hub 30 and rotatably mounted within the head H2 in line with the axis of the latter.

. This hub 38 is provided with a square aperture 3| therethrough into which a square end or section 32 ofthe shaft 5 extends as shown in Fig. 2, the said shaft portion 32 also extending through the driving member I I! which latter ismade tubular or'hollow for this purpose. By this arrangement when the sleeve 24 is turned on the head I2 in a forward direction the ring gear 26 is turned with it thus rotating the idler gear 21 and the gear 29 which turns the shaft 5 to draw the cones 3 and 4 together. The movement of the cones 3 and 4 toward each other produces a corresponding expansion of the stones stood from Fig. 5 the brake band 45 is secured 33 which are provided with pins 34 resting on the cones. The pins 9 and |3 at the lower and upper ends of the shaft l0 intermediate the grinder body and driving head l2 and engaging the bayonet slots 1, 8, I4, I5 therein, respectively, form universal connections between this shaft and the body and head which leaves the grinder free to adapt itself to the surface of "work even though the driving head |2 is in a fixed position. The sleeve 24 is shown in elevation in Fig. 4 and is provided with an annular portion 35 of larger diameter than the remainder of the sleeve and this portion 35 is provided with a series of spaced recesses 36 as shown in Figs. 3 and 4. A stop ring or indexing member 31 is provided around the sleeve 24 having teeth 38 shown in Figs. 8 and 9 adapted to engage in the recesses 36 shown in Figs. 3 and 4. This stop member 31 is provided with a stop lug 39 which is adapted to strike the end 22 of the stop 2| as will be understood from Fig. 2. As will be understood from Fig. 2 the annular member 31 may be moved upwardly from the position shown in Fig. 2 to that shown in Fig. 3 at which time the teeth 38 are out of engagement with the notches 36. At this time the member 31 may be turned in relation to the sleeve 24 and the teeth 38 may be reengagedin the different notches 35 at the new setting. The sleeve 24 is provided with a key 49 engaging in a keyway in the drum 4|. A set screw 42 engages the key 40 and prevents movement of the drum 4| in relation to the sleeve 24. The head I2 is provided with a shank 43 which is fastened in the chuck 44 by means of which the grinder is driven. The drum 4| extends about the chuck 44 and a brake band 45 is provided having a friction facing 46 adapted to engage the drum 4| between the annular ribs 41. As will be under to a bracket member 48 which in turn is secured to a short length of tubing 49 which is positioned on the stationary tube 5|]. This supports the several brake bands in position, as will be understood from Fig. 1, and the two ends of the brake band are each provided with an arm 5| connected together by the bolt 52 on which a spring 53 is mounted which is normally adapted to expand'the brake band and hold it out of engagement with the drum 4|. By this arrangement the arms 5| may be pinched together by the operator to apply the brake to the drum 4|. The arrangement shown in Fig. 1 is adapted for grinding the four cylinders of a cylinder block and it will be readily understood that cylinder blocks having six or eight cylinders in line may also be ground with this device by adding extra rinders.

With the grinders arranged in series, as shown in Fig. 1, the cylinder block to be ground is moved up toward the grinders so that the grinders enter the cylinders by movement of the cylinder block.

In order for the grinding stones to properly enter the cylinders it is necessary that the device be set so that the cutting diameter of the grinding stones is less than the inside diameter of the cylinder to be ground. In order to contract the stones the operator grasps the ring 31 shown in Fig. 2 and turns it so that the lug 39 is moved from the position behind the end 22 of the stop member 2| through a complete revolution until the lug 39 engages the front side of the said end 22. As the ring 31 is secured to the sleeve 24 at this time by the teeth 38 of the ring engaging in the notches 36 of the sleeve shown in Fig. 4, the sleeve is turned in relation to the head which also turns the drum 4| and this movement of the sleeve 24 carries the ring gear 26 and turns the idler gear 21 which also rotates the gear 29 and turns the square shaft 32 and shaft 5 to unthread the shaft 5 from the cone 3 thus forcing the cones apart, which movement is assisted by the coiled spring 54 interposed between the cones, as shown in Fig. 2. As the cones are separated the springs 55 mounted on the body and engaging with the pins 34 force the stones inwardly and hold the pins 34 in contact with the cones so that the grinding diameter of the stones 33 is reduced. At this time the grinding stones will readily fit within the cylinders and the several grinders are rotated at the same time. The driving head 2 including the parts attached thereto and the grinder are rotated at the same time by rotation of the different chucks. Th e gears 21 and 29 remain in stationary relation in the head |2 while it is rotated and as the idler gear 21 meshes with the ring gear 26 the sleeve 24 and ring 31 attached thereto are also rotated with the head and the member |8 which is keyed to the head by the keyway l9 and key |9| shown in Fig'. 2 also rotates with the head. During rotation of the grinders the several arms 5| are pinched together by the operator which applies the brake to the drum 4| shown in Fig. 3. The application of the brake tends to hold the drum 4| stationary While the head is rotating and by means of the key 40 the sleeve 24 and ring 31 are held stationary for a moment at this time. While the sleeve 24 is held stationary the ring gear 26 is also held stationary and as the head is rotating at the same time the idler gear 21 meshing with the ring' gear 26 is rotated and thus rotates the gear 29. This rotation of the gear 29 turns the square shaft 32 shown in Fig. 2 and threads the shaft 5 into the cone 3 thus drawing the cones 3 and 4 together and forcing the stones 3 radially outwardly. As soon as the arms 5| are released the drum 4| and parts connected therewith rotate with the head I 2 as a unit until the grinding stones grind out additional metal in the cylinders and free themselves. At this time the arms 5| may be again pinched together which applies the brake and tends to hold the sleeve 24 and ring 31 secured thereto stationary thus further expanding the grinding stones. These parts will remain stationary during application of the brake until the end 22 engages the lug 39 at which time the ring 31 and sleeve 24 and drum 4| are carried with the head by the engagement of the lugs 22 and 39 and at this time the stones have reached 'their maximum diameter and as soon as the stones free themselves the cylinders are ground to the desired size. During rotation of the grinder it is necessary that the cylinder block be moved up and down on the grinders so that the grinders grind the entire inner walls of the cylinders. One of the principal features of the invention resides in the use of the adjustable ring 31 having the teeth 38 which may be engaged in the different notches 36 in the sleeve 24. By this arrangement the ring 31 and lug 39 may be set at different positions in relation to the sleeve 24 and thus the maximum grinding diameter which occurs when the lug 22 engages the lug 39 as shown in Fig. 2 may be varied and the companion minimum diameter for any certain setting is set by reversing rotation of the ring and sleeve until the lug 39 engages the opposite side of the lug 22. The variation in grinding diameter produced by changing the ring from head connected with the body member to roone notch $6 to the next notch 36 .is about onehalf a thousandth of an inch in grinding diameter. It is to be noted that the drum 4| may be considerably shorter than shown and the brake may be applied by mean's of apair of leather faced hand tongs.

From the foregoing description it becomes evident that the device is very simple and efilcient in operation, affords a means for setting the grinding stones at different maximum and minimum grinding diameters, will grind out an'entire cylinder block at one time and provides a device which accomplishes the objects described.

Having thus fully described my invention, its utility and mode of operation, what I claim and desire to secure by Letters Patent er the United States is- 1. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one direction to cause movement of the grinding stones radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the grinding stones inwardly toward the body member, a

tate therewith, a sleeve rotatable on the head, a ring gear carried by the sleeve, an idler gear rotatably mounted in the head and meshing with the ring gear, a gear meshing with the idler gear and arranged to rotate the shaft in the body member, indexing means limiting rotation of the sleeve in either direction on the head, a drum secured to the said sleeve, a stationary brake band extending about the drum,,and manually "operable means for applying the brake to the drum.

' 2. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one direction to cause movement of the grinding stones radially outward from the body member and adapted upon rotation in the opposite direc-' tion to allow movement of the grinding stones inwardly toward the body member, ahead connected to the body member to rotate with the body member, a sleeve rotatable on the head, a ring gear carried by the sleeve, an idler gear rotatably mounted in the head and meshing with the ring gear, a gear meshing with the idler gear and arranged to rotate the shaft of the hollow body member, an indexing device adjustable circumferentially of the said sleeve, a lug carried by the indexing device, a stop carried by the said head and adapted to be engaged by thelug of 1 the indexing device as the sleeve is turned relative to the head, and manually operable means for holding the sleeve from rotation during rotation of the head.

3. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one and adapted to rotate the shaft. of the body member, an indexing member ,adjustably mounted on the said sleeve, a stopcarried by the said head, a lug on the indexing memberadapted to engage the said stop, a drum secured to the said sleev'e,.and manually operable means for holding the drum from rotation.

4. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one direction to cause the grinding stones to move radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of theigrinding stones radially toward the body member, a head connected to the body member to rotate the body member therewith, a sleeve rotatable on the head, a ring gear carried by the sleeve, an idler gear rotatably mounted in the head and meshing with the ring gear, a gear meshing with the idler gear and mounted on the said shaft, a drum secured to the said sleeve, a brake band extending about the drum, means preventing rotation of the brake through movement toward each other to cause an expansion of the stones and through movement in an opposite direction to permit contraction 1 thereof, a head rotatable with the body member, a drum rotatably mounted on the head, a brake adapted to be applied to the drum, and means actuated by application of the brake to the drum during rotation of the head for causing the cones to approach each other and expand the grinding stones.

6. In a cylinder grinder, a series of grinding stones arranged for expansion or contraction ra dially about a common axis to vary the grinding diameter of the stones, a pair of cones movable toward or from each other to cause expansion or contraction of the stones,-a head for rotating the grinder, a drum rotatable in relation to the head, means operable by the relative rotation of the drum to the head for moving the cones to expand the grinding. stones, and manually operable means for producing the relative rotation of the drum to the head.

'7; In a cylinder grinder, a series of grinding stones arranged for expansion or contraction about a common axis to vary the grinding diameter of the stones, brake operated means adapted to be applied during rotation of the grinder for moving the stones toward the work, and adjustable means for predetermining the limit of expansion of the stones by the brake operated means.

8; In a cylinder grinder, a series of grinding stones arranged for expansion or contraction about a common axis to vary the grinding diameter of the stones, means positively determining the limit of contraction of the stones, brake operated means adapted to be applied during rotation of the grinder to set the said limiting means to provide a new limit of contraction, and adjustable means for predetermining the limit of expansion of the stones'by the brake operated means.

9. In a cylinder grinder, a series of grinding stones arranged for expansion or contraction about a common axis to vary the grinding diameter, adjustable means limiting the extent to which the grinding stones may be expanded, means for causing an expansion of the stones, said means providing a support for the stones in any of the adjusted positions, and brake oper ated means for actuating the said last named means to expand the stones.

10. In a cylinder grinder, a body member, a series, of grinding stones carried thereby arranged for expansion or contraction radially about a common axis, adjustable means limiting the extent to which the grinding stones may be expanded, means carried by the body for causing expansion of the stones, a drum connected with said means, and a brake mechanism for holding the drum and thereby cause actuation of the expanding means through relative rotation of the body.

11. In a cylinder grinder, a series of grinding stones arranged for expansion or contraction about a common center to vary the grinding diameter of the stones, means for expanding said stones toward the work, said means dGIiV'. ing its motion from the driving shaft of the grinder, brake-operated means adapted to be applied during rotation of the grinder for putting the expanding means into operation and adjustable means for predetermining, the limit of expansion of the stones by the brake-operated means.

12. In a cylinder grinder, a series of grinding stones arranged for expansion or contraction about a common axis to vary the grinding diameter of the stones, means to expand said stones toward the work, a drive shaft for the grinder,

brake means adapted to be applied during rotation of the grinder for driving said expanding means from the drive shaft of the tool, and adjustable means for predetermining the limit of expansion of the stones by the brake-operated means, said adjustable means comprising a rotatable casing adapted to be held against rotation by said brake means, and operative connections between the casing and the expanding means.

13. A cylinder grinder comprising a supporting body, a plurality of grinding members mounted on said body and movable thereon toward and from the surface to be ground, diameter ad; justing means for enlarging or reducing the diameter of said grinding members, a driving member, an intermediate power transmitting member having a driving connection with said driving member and withsaid body, manually controlled adjusting means mounted on said driving member, intermediate adjustment means operatively connected with said manually con-' trolled adjusting means and said diameter adjusting means, and brake mechanism adapted to be applied during rotation of the grinder for actuating said diameter adjusting means to expand said grinding members toward the work.

14. In a cylinder hone driving and adjusting mechanism, a hollow drive member, an internal adjusting disk within said hollow drive member guided for rotation relative thereto, said disk having an annular row of teeth thereon, a spindle secured to said disk and extending through said hollow drive member, hand-controlled adjusting means having a part thereof arranged externally of said drive member, and intermediate adjustment transmitting means operatively connecting said hand-operated adjusting means and the teeth of said disk and adapted to be selectively set by said adjusting means to permit a predetermined partial rotation of the drive member relative to the spindle, expanding means operable by said partial relative rotation to expand the hone, and brake operated means adapted to be applied during rotation of the grinder for actuating said expanding means.

15. A cylinder grinder comprising a hollow body member, expansible abrading elements carried by said body member, a shaft extending into the body member and adapted upon rotation in one direction to cause movement of the abrading elements radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the abrading elements inwardly toward said body member, a head connected with said body member to rotate therewith, a sleeve rotatable on said head, transmission gearing between said sleeve and said shaft and adapted to rotate said shaft, means limiting rotation of said sleeve and brake means for preventing rotation of said sleeve when desired.

16. A cylinder grinder comprising a hollow body member, expansible abrading elements carried by said body member, a shaft extending into the body member and adapted upon rotation in one direction to cause movement of the abrading elements radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the abrading elements inwardly toward said body member, a head connected with said body member to rotate therewith, a sleeve rotatable on said head, gearing between said sleeve and said shaft and adapted to rotate said. shaft, means limiting rotation of said sleeve on said head, a drum secured to said sleeve, and manually operable means for ap plying a brake to said drum.

17. A cylinder grinder comprising a hollow body member, expansible abrading elements carried by said body member, a shaft extending into the body member and adapted upon rotation in one direction to cause movement of the abrading elements radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the abrading elements inwardly toward said body member, a head connected with said body member to rotate therewith, a sleeve rotatable on said head, transmission gearing between said sleeve and said shaft and means to hold said sleeve against rotation when desired whereby to drive said gearing and said shaft. v

18. In a grinding tool, the combination of a hollow mandrel, a tube connected thereto, expansible shoes carried by the mandrel, shiftable cones in the mandrel, operative to expand the shoes, operating connections to said cones, in-

cluding a rod within the tube, a driving shank connected to the tube, and a transmission gearing adapted to transmit rotative motion of the shank to said rod, the transmission gearing being of the planetary type and having an external rotary casing, and a clamp to prevent rotation of the casing when desired.

19. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one direction to cause movement of the grinding stones radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the grinding stones inwardly toward the body member, a head connected with the body member to rotate therewith, a sleeve rotatable on the head, a ring gear carried by the sleeve, an idler gear rotatably mounted in the head and meshing with the ring gear, a gear meshing with the idler gear and arranged to rotate the shaft in the body member, indexing means limiting rotation of the sleeve on the head, a drum secured to the said sleeve, a stationary brake band extending about the drum, and manually operable means for applying the brake to the drum.

20; A cylinder grinder comprising a hollow body member, a series of grinding stones carried by thebody member, a shaft extending into the hollow body member and adapted upon rotation in one direction to produce movement of the grinding stones radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the grinding stones inwardly toward the body member, a head connected to the body member to rotate therewith, the shaft of the body member extending into the head, a gear mounted on the end of the shaft within the head, an idler gear meshing with the said gear, a ring gear meshing with the idler gear, a sleeve secured to the ring gear and rotatably mounted in relation to the head, an indexing member adjustable circumferentially of the said sleeve, a lug carried by the said indexing member, a stop adapted to be engaged by the said lug upon rotation of the sleeve on the head, and manually operable means for controlling rotation of the sleeve in relation to the head during rotation of the head.

21. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one direction to cause movement of the grinding stones radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the grinding stones inwardly toward the body member, a head connected to the body member to rotate with the body member, a sleeve rotatable on the head, a ring gear carried by the sleeve, an idler gear rotatably mounted in the head and meshing with the ring gear, a gear meshing with the idler gear and arranged to rotate the shaft of the hollow body member, an indexing device adjustable circumferentially of the said sleeve, a lug carried by the indexing device, a stop adapted to be engaged by the lug of the indexing device as the sleeve is turned relative to the head, and manually operable means for holding the sleeve from rotation during rotation of the head.

22. A cylinder grinder comprising a hollow body member, a series of grinding stones carried by the body member, a shaft extending into the hollow body member and adapted upon rotation in one direction to produce movement of the grinding stones radially outward from the body member and adapted upon rotation in the opposite direction to allow movement of the grinding stones inwardly toward the body member, a head connected to the body member to rotate" the body member therewith, a sleeve rotatable on the head, a ring gear carried by the sleeve, an idler gear rotatably mounted in the head and meshing with thering gear, a gear meshing with the idler gear and adapted to rotate the shaft of the'body member, an indexing member adjustably mount-' ed relative to the said sleeve, a stop rotatable relative to said indexing member upon relative rotation of the sleeve and head, a lug on the indexing member adapted to engage the said stop,

a drum secured to the said sleeve, and manually operable means for holding the drum from rotation.

23. A device for the purpose described including a head, abrading members carried by and movable radially of said head, and means for adjusting said abrading members radially including a member adapted to be retarded in its rotation with the head for effecting such adjustment, and means for retarding rotation of said member, including a brake band, a support therefor, and a manually operable handle for operating said band.

24. In a cylinder adjusting mechanism, abrading elements, a support for said elements, a member for driving said support, and means for adjusting said elements relative to the cylinder surface to be ground which comprises an adjusting member associated with said elements, an adjusting device mounted upon said drive member and having a hand-grip surface and a frictionsurface and rotatable with and relative to said drive member, a connection between said device and adjusting member, and a friction device operable at will to engage said, adjusting device friction surface to retard or stop said adjusting device as said drive member is in motion to efiect relative rotational movement between said adjusting device and drive member.

25. In a cylinder adjusting mechanism, abrading elements, a support for said elements, a member for driving said support, and means for adjusting said elements relative to the cylinder surface to be ground which comprises an adjusting member associated with said elements, a cylindrical adjusting device mounted upon said drive member and having a frictional surface and rotatable with and relative to said drive member, a connection between said device and adjusting member, and a friction device operable at will to retard or stop said adjusting device as said drive member is in motion, said device comprising a pair of handle parts hinged together and each MARSDEN C. HU'I'I'O. 

